Although pixel shaders were designed for the creation of programmable rendering effects, they can also be used as generic processing units for vector data. In this paper, attention is paid to an implementation of the YCoCg-R to RGB color space transform, as defined in the H.264/AVC fidelity range extensions, by making use of pixel shaders. Our results show that a significant speedup can be achieved by relying on the processing power of the GPU, relative to the CPU. To be more specific, high definition video (1080p), represented in the YCoCg-R color space, could be decoded to RGB at 30 Hz on a PC with an AMD Athlon XP 2800+ CPU, an AGP bus and an NVIDIA GeForce 6800 graphics card, an effort that could not be realized in real-time by the CPU

@inproceedings{335787,
abstract = {Although pixel shaders were designed for the creation of programmable rendering effects, they can also be used as generic processing units for vector data. In this paper, attention is paid to an implementation of the YCoCg-R to RGB color space transform, as defined in the H.264/AVC fidelity range extensions, by making use of pixel shaders. Our results show that a significant speedup can be achieved by relying on the processing power of the GPU, relative to the CPU. To be more specific, high definition video (1080p), represented in the YCoCg-R color space, could be decoded to RGB at 30 Hz on a PC with an AMD Athlon XP 2800+ CPU, an AGP bus and an NVIDIA GeForce 6800 graphics card, an effort that could not be realized in real-time by the CPU},
author = {De Neve, Wesley and Van Rijsselbergen, Dieter and Hollemeersch, Charles and De Cock, Jan and Notebaert, Stijn and Van de Walle, Rik},
booktitle = {Proceedings of the 13th ACM International Conference on Multimedia},
isbn = {1-59593-044-2},
keyword = {RGB color space transform,H.264/AVC fidelity range extension,programmable rendering effects,colour graphics,video coding,GPU-assisted decoding,video samples,YCoCg-R color space,pixel shader},
language = {eng},
location = {Singapore, Singapore},
pages = {447--450},
publisher = {Association for Computing Machinery (ACM)},
title = {GPU-assisted decoding of video samples represented in the YCoCg-R color space},
url = {http://dx.doi.org/10.1145/1101149.1101248},
year = {2005},
}